lim(5×2^(n-1)-2)/(5×2^n-5-2×n)

lim(3^2n+5^n)/(1+9^n)=? lim(1/n+2/n+3/n+4/n+5/n+……+n/n)=lim(1/n)+lim(2/n)+……+lim(n/n)成立吗?（n趋近于无穷大）为什么不成立? 若lim (3n^2+5)An=2,且lim （1-n^2）An? lim(3^2n+5^n)/(1+9^n)3^2n or 5^n 用数列极限证明lim(n→∞)(n^-2)/(n^+n+1)=1中证明如下:lim(n→∞)3n+1/5n-4 lim(n->无穷)[(1+3+5+.(2n+1)]/n^2]^(3-2n) lim(n-无穷)=3n^2/5n^2+2n-1, lim((2n+1)^5(n+10)^3)/((n^2-2n-3)^4)=32 求lim(n->无穷)(3n+5)/(n^2+n+4)^1/2的极限 高中数学数列极限问题lim(1+2/n)^n+5=?已知lim 2^n/ (2^n-1)+(a+1)^n =2 则a的范围? 求数列极限.1.lim n无限（根号n+5 减 根号n） 2.lim n无限 （1+1/2^n） 计算下列极限：1）lim(n→∞) 1/n3 2）lim(n→∞)4n+1/3n-11）lim(n→∞) 1/n3 2）lim(n→∞)4n+1/3n-13) lim(n→∞) (1/3)n4)lim(n→∞)n3+2n-5/5n3-n 5) lim(n→∞)(1+1/2n)n 6) lim(n→∞)2x3-x2+1/3x2+2x-9 7) lim(x→0 )sin3x/sin7x8) lim(5×2^(n-1)-2)/(5×2^n-5-2×n) lim[1+3+5+…+(2n-1)/[n(2n-1)]等于多少? lim(n->∞){1/2*4+1/3*5+...+1/(n+1)(n+3)=? lim(1+4+7+…+(3n-2))/(7n^2-5n), 求极限lim[(3n-5)/(3n+1)]^(2n-7) lim(n—无穷大)n!/2×5×8×…×(3n-1)如题,